data_template in service calls has been depreciated for several years, you can simply use templates when using data
The current examples in the docs will give an error when used in developer tools > services, so I would suggest changing it to data (it will still work in an automation or script)
data_templatein service calls has been depreciated for several years, you can simply use templates when usingdataThe current examples in the docs will give an error when used in developer tools > services, so I would suggest changing it todata(it will still work in an automation or script)